/*
 * Copyright 2003-2006 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.nanhill.commons.id;

/**
 * Abstract superclass for LongIdentifierGenerator implementations.
 *
 * @author Commons-Id team
 * @version $Id: AbstractLongIdentifierGenerator.java,v 1.1 2006/09/20 06:55:58 alin Exp $
 */
public abstract class AbstractLongIdentifierGenerator implements LongIdentifierGenerator {

    /**
     * Constructor.
     */
    protected AbstractLongIdentifierGenerator() {
        super();
    }

    /**
     * Returns the maximum value of an identifier from this generator.
     *
     * <p>The default implementation returns Long.MAX_VALUE. Implementations
     * whose identifiers are bounded below Long.MAX_VALUE should override this method to
     * return the maximum value of a generated identifier.</p>
     *
     * @return {@inheritDoc}
     */
    public long maxValue() {
        return Long.MAX_VALUE;
    }

    /**
     * Returns the minimum value of an identifier from this generator.
     *
     * <p>The default implementation returns Long.MIN_VALUE. Implementations
     * whose identifiers are bounded above Long.MIN_VALUE should override this method to
     * return the minimum value of a generated identifier.</p>
     *
     * @return {@inheritDoc}
     */
    public long minValue() {
        return Long.MIN_VALUE;
    }

    public Object nextIdentifier() {
        return this.nextLongIdentifier();
    }

    public abstract long nextLongIdentifier();
}
